Automobile interior wear tester includes Taber Abrasion Tester and Martindale Abrasion Tester and other experimental instruments. It is a test equipment independently developed and produced by Standard Group (Hong Kong) Co., Ltd., which can be used to test the wear resistance of automotive leather. The method There are mainly Taber wear-resistant method, Martindale wear-resistant method and STROLL wear-resistant method.

A very important application of leather is in the field of automotive interiors. With the rapid development of the automotive industry, the inspection of various performances of automobiles in the industry is becoming more and more stringent. For example, the abrasion resistance test of automobile leather is an example.

Taber Abrasion Method.

ASTM D 3884-2009 specifies the TABER abrasion method.

Test principle.

The specimen under test is placed on a rotating platform and is worn by the rotating frictional motion of two rolling friction wheels above it against the specimen under a certain load. One friction wheel faces outwards and the other faces inwards, forming a circular wear mark. After a specified number of rubbing cycles, the wear of the specimen is evaluated visually.

Procedure.

The specimen is fixed face up on the rotating platform and the selected grinding wheel is mounted on the support lever. After selecting the appropriate load, the support lever is lowered to bring the wheel into contact with the specimen surface and the dust extraction unit is connected and switched on. The instrument is started and the test is carried out at the number of rotations set by the counter. After the test, remove the specimen, check and record the wear of the specimen and use the grey sample card according to GB/T 250-2008 "Colour fastness test for textiles Grey sample card for assessing discolouration".

Martindale Abrasion Method.

The Martindale method is often used for textile abrasion resistance testing and pilling evaluation. GB/T3903.16-2008 "Test methods for footwear Uppers, linings and insoles Abrasion resistance" specifies the test method for testing shoe uppers using the Martindale method and is also applicable to the testing of the abrasion resistance of automotive leathers.

Using the Martindale method, the specimen is rubbed with a standard friction fabric under constant pressure. Relative motion between the rubbing fabric and the specimen is carried out in a Lissajous pattern, generating friction in all directions. The degree of damage to the specimen is assessed after completing a specified number of rubs.

Operating procedure.

To operate, a piece of polyurethane foam with a thickness of (3±1) mm and a density of (30±3) kg/m3 is padded flat on the back of the specimen and the specimen is fixed to the grinding head with a clamping ring, then the table felt is placed on the grinding table, then the friction fabric is placed on the table felt and a weight generating a pressure of (2±0.2) kPa is placed on the friction fabric and then the friction fabric is fixed. The abrasive head is mounted on the wear tester and a pressure of (12±0.2) kPa is applied to the head, the apparatus is started and the test is carried out at the number of rotations set by the counter. After the test, remove the specimen, check and record the wear of the specimen and assess the colour change in the test area using a grey sample card according to GB/T 250-2008 "Colour fastness test for textiles Grey sample card for assessing colour change".